Unofficial web service metadata info related to the EPOS project on GitHub.
Check this document for summaries about metadata, DCAT, DCAT-AP and EPOS-DCAT-AP.
Some specific notes about a few issues are kept here as well, but it's probably best to refer to the original project.
Any details about the EPOS-DCAT-AP XML structure for web service description and specific IMO examples should go into the folder IMO_files.